Apollo Astronauts May Have Brought a Piece of Ancient Earth Back From the Moon

io9

A re-analysis of lunar materials collected during the Apollo 14 mission has resulted in a rather astonishing conclusion: One of the rocks brought back appears to contain a small chunk of Earth dating back some 4 billion years. Incredibly, it’s now amongst the oldest terrestrial rocks known to exist.

Read more…

https://gizmodo.com/apollo-astronauts-may-have-brought-a-piece-of-ancient-e-1832055011